Downing Street rejected claims by Dominic Cummings on Monday (January 17) that Boris Johnson was told in advance staff were holding a drinks party in the No 10 garden during the first Covid lockdown.
The Prime Minister’s former chief adviser said he was willing to "swear under oath" that Mr Johnson was lying when he told MPs he had not known beforehand about the "bring your own bottle" event on May 20, 2020.
Addressing the Commons last week the PM admitted spending 25 minutes at the gathering saying he had believed "implicitly" that it was a work event.
